Nut lock



Patented Feb. 1, 1927. i

isiesaa asies.

' Nor Look;

Apucaaon fiiea August 5, 1926. senai-No; 127,213.

The present invention pertains to' a novel nut vlock designed forthegeneral purpose of' preventingV a. nut from becoming untln'eaded froma bolt.

e This object is .obtained'cssentially by fit- :ting the nut snugly intocap vand looking .the cap tojlone of the members Secured by the bolt.More specifically, Vthethreaded end of the bolt is surrounded'by anapertured disc io which' is suitably' locked to one of th'eclarnpedmembers. The disc is then'engaged by la' cap alsosurrounding'the threaded end and :having a depressi'on sl'aped like thenut and'receiv'ing the same. A detent member is disposed between thedisc and cap' and is Vlocked to both these parts. The nut which isthreaded on ,this end of the bolt is received in the depression of thecap and lclamps all the parts firmly together.

The nut obviously cannot turn relatively to the cap, and'sincethe latteris locxed to the disc and in turn to one of'the secured members, the nutcannot work off the threaded end. Special means are provided forbreaking the connection between the diso and cap when it is desired toremove the nut.

The invention is fully disclosed in the following` description and inthe accompanying drawings in which;

Figure 1 is a sectional view of the device;

Figure 2 is a perspective view of the locking disc; i

Figure 3 is a perspective view of the cap in which the nut is received;

Figure Lt is a perspective view of the spring detent;

Figure is a perspective' view of the box which receives the head of thebolt; and

Figure 6 is a detail section of the looking disc.

Reference to by use of like characters which are employed to designatecorresponding parts throughout; 1

As shown in Figure 1 the members 1 and 2 which are to be clampedtogether are penetrated by the bolt 3 in the'usual manner. The head 4 ofthe bolt is, however, received in a box 5 having the l teralConfiguration of the bolt head so that the latter will fit snuglytherein. The base 6 of the box has in aperture 7 through which the boltpasses and is also provided With a lug 8 extending from the edge of theaperture into an appropriate notch 9 cut in the member 1.

The threaded end 10 of the bolt is exwhich eng'ages the member 2.

1adapted tol-receive the same.

these views will now be made otfset end 21l may posed through theremaining memb-erfl2 and is surrounded first by an lann of the centralaperture 12 of 13 extends into',anappropriate notch' le cut in thefaceof'the member 2. VThe disc is -formed further with va circularapertures 15 each having -an nwardly. inclined wall 16 and' a straightwall :16' i as shown -in detail'in Figure 6. 3

Acircu'larcap 17 `s adapted to engage the disc 11 and is formedwi-thawdepression 18 having the lConfiguration of the .nut V 19 bandPrior to the application of the cap, a Spring detent 20 is inserted inthe cap in such amanner as to Surround the depression 18. (One end-` ofthe tletent'lis Offset as at-21 in' order .to enter another one' ofremaining end carries a pin 22 adapted to enter an aperture 23 formed inthe cap.

Finally, the pression 18 and turned on the threaded end `10 until themember 2, disc 11 and cap are clamped firmly together.

The relation between the walls 16 and 16' of the apertures 15 and thethreads on the' end 10 is such that when the nut 19 is tight-` ened theoffset end 21 moves from the wall 16 to the inclined wall 16 of eachaperture. The Offset end re'adily slides over the inclined walls 16 sothat the nut'and associated parts may be tightened to the full extent.If an attempt is made to release the nut, the cap 17 obviously movesWith it and'the end 21 abuts one of the straight wallsl'. Since the' end21 is unable to pass this wall, the detent does i not move and thereforeholds the cap 17 and nut- 19 againstturning. v

Then it is desired to release the nut, a pin 211 is driven against thepin 22 in order to move the latter out of the aperture 23 and inengageinent with the base of the cap at one side of the aperture. Thenut and cap may now be turncd one revolution until the aperture 23 againarrives at the stationary pin 22 and receives the same. The operation ofejecting the pin 22 must be repeated for each turn in releasing the nutuntil.y the be reached by and removed from the apertures 15.

WVhile a specific embodiment of the invention has been illustrated anddescribed, it is to be understood that various alterations in thedetails of construction may be made without departing from the spirit ofthe inn the aperturesl. The

nut 19 is inserted in the (lea thin toolL i ular disc 11'1 At the edgethe disc, a lug y series .of

vention as indioated by the appended olaims. Having thus fully describedthe invention, WhatI claim as new and desire to proteot by LettersPatent is:

1. A nut lock comprising an apertured discv adapted to surround thethreaded end of av bolt, a C ap adapted to Surround said end, a-depresslon in said cap and having the shape of a nut, and a detentmember coiled in said oap around the bolt, and adapted for looking inthe apertures of said dise and in said oap.

2. A nut look oomprising anV apertured disc adapted to Surround thethreaded end of a bolt, a cap adapted to Surround said end, a depressionin said lcap and having the shape of a nut, and a detent member ooiledin said oap around the bolt, and having one end receivable in saidapertures, and means for looking the remaining end to said oap.

3. A nut look comprising an apertured dise adapted to surround thethreaded end of a bolt, a cap adapted to Surround said end, a depressionin'said oap and having the shape of a nut, each of said apertures havingan inolined Wall and a straight Wall, and

a detent member ooiled in said oap, around the bolt and having one. endreoeivable in said apertures, and means for looking the remaining end tosaid oap.

5. A nut look oomprising an bapertured diso adapted to surround thethreaded end of a bolt, a oap adapted to Surround said end,

a' depression in said oap and having the shape of'a nut, a detent memberooiled in said oap, around the bolt and having one end reoeivable insaid apertures, and a pin provided at the remaining end of said detentmember, said cap having an apertureadapted to receive said pin. f

In Witness Whereof I have h'ereunto set my hand. i

MAX ISTEINKRITZVER

